<template>
  <div>
    <el-tree
      :expand-on-click-node="false"
      default-expand-all
      :data="depts"
      :props="defaultProps"
    >
      <!-- 节点结构 -->
      <!-- v-slot="{ node, data }" 只能作用在template -->
      <template v-slot="{ data }">
        <el-row
          style="width: 100%; height: 40px"
          type="flex"
          justify="space-between"
          align="middle"
        >
          <el-col>{{ data.name }}</el-col>
          <el-col :span="4">
            <span class="tree-manager">{{ data.managerName }}</span>
            <!-- $event 实参 表示类型 -->
            <el-dropdown @command="operateDept($event, data.id)">
              <!-- 显示区域内容 -->
              <span class="el-dropdown-link">
                操作<i class="el-icon-arrow-down el-icon--right" />
              </span>
              <!-- 下拉菜单选项 -->
              <el-dropdown-menu slot="dropdown">
                <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                <el-dropdown-item command="del">删除</el-dropdown-item>
              </el-dropdown-menu>
            </el-dropdown>
          </el-col>
        </el-row>
      </template>
    </el-tree>

    <AddDept
      ref="addDept"
      @updateDepartment="getTree"
      :current-node-id="currentNodeId"
      :show-dialog.sync="showDialog"
    />
  </div>
</template>
<script>
import { getDepartment, delDepartment } from '@/api/tree'
import { translateTree } from '@/utils/index'
import AddDept from './components/add-dept'
export default {
  name: 'Tree',
  components: {
    AddDept
  },
  data() {
    return {
      depts: [],
      defaultProps: {
        children: 'children',
        label: 'name'
      },
      showDialog: false,
      currentNodeId: null
    }
  },
  created() {
    this.getTree()
  },
  methods: {
    async getTree() {
      const res = await getDepartment()
      console.log(res)
      this.depts = translateTree(res, 0)
    },
    operateDept(type, id) {
      // 添加 id 参数
      if (type === 'add') {
        this.showDialog = true
        this.currentNodeId = id
      } else if (type === 'edit') {
        // 编辑部门场景
        this.showDialog = true
        this.currentNodeId = id // 记录id 要用它获取数据
        // 更新props- 异步动作
        // 直接调用了子组件的方法 同步的方法
        // 要在子组件获取数据
        // 父组件调用子组件的方法来获取数据
        this.$nextTick(() => {
          this.$refs.addDept.getDepartmentDetail() // this.$refs.addDept等同于子组件的this
        })
      } else {
        this.$confirm('确定删除吗？').then(async () => {
          await delDepartment(id)
          this.$message.success('删除成功')
          this.getDepartment()
        })
      }
    }
  }
}
</script>
<style scoped>
.app-container {
  padding: 30px 140px;
  font-size: 14px;
}
.tree-manager {
  width: 50px;
  display: inline-block;
  margin: 10px;
}
</style>
